/**
 * Copyright 2008-2009 HAN.BIFANG
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package han.bifang.gwt.client.config.content;

import han.bifang.gwt.client.common.EntityConstants;
import han.bifang.gwt.client.common.GwtContext;
import han.bifang.gwt.client.common.PrivilegChecker;
import han.bifang.gwt.client.common.RequestObject;
import han.bifang.gwt.client.common.ResponseObject;
import han.bifang.gwt.client.common.entity.Config;
import han.bifang.gwt.client.common.util.StringUtils;
import han.bifang.gwt.client.communicate.BifangGWTServiceAsync;
import han.bifang.gwt.client.config.ConfigMessages;

import java.util.ArrayList;
import java.util.HashMap;

import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.user.client.ui.HTMLTable.CellFormatter;
import com.google.gwt.user.client.ui.HTMLTable.ColumnFormatter;

/**
 * 
 * @Author Kent
 */
public class ProviderTab extends Composite {
	private ConfigMessages cons = null;

	private BifangGWTServiceAsync service = null;

	private GwtContext context = null;

	private VerticalPanel panel = null;

	private boolean initial;

	private TextBox rbacProvider,authProvider;

	private HashMap<String, Config> list;

	public ProviderTab(ConfigMessages cons, BifangGWTServiceAsync service,
			GwtContext context) {
		this.service = service;
		this.context = context;
		this.cons = cons;

		panel = new VerticalPanel();
		panel.setWidth("100%");
		panel.setSpacing(5);

		initWidget(panel);
	}

	public void init() {

		if (!initial) {
			Grid table = new Grid(2, 2);
			table.setWidth("50%");
			table.setCellPadding(1);
			table.setCellSpacing(1);
			table.setBorderWidth(1);

			ColumnFormatter cf = table.getColumnFormatter();

			cf.setWidth(0, "40%");
			cf.setWidth(1, "60%");

			CellFormatter ff = table.getCellFormatter();
			ff.setStyleName(0, 0, "tablecol");
			ff.setStyleName(1, 0, "tablecol");


			table.setHTML(0, 0, cons.rbacProviderClass());
			table.setHTML(1, 0, cons.accessProviderClass());

			
			rbacProvider = new TextBox();
			rbacProvider.setVisibleLength(64);

			authProvider = new TextBox();
			authProvider.setVisibleLength(64);

			table.setWidget(0, 1, rbacProvider);
			table.setWidget(1, 1, authProvider);

			panel.add(table);
			panel.add(new HTML("&nbsp;"));

			Button b = new Button(cons.modify());
			b.addClickListener(new ClickListener() {

				public void onClick(Widget sender) {
					if (!validate()) {
						return;
					}
					ArrayList<Config> param = new ArrayList<Config>();

					list.get(EntityConstants.CONFIG_RBAC_PROVIDER)
							.setValue(rbacProvider.getText());
					list.get(EntityConstants.CONFIG_ACCESS_PROVIDER).setValue(authProvider.getText());
					
					param.add(list
							.get(EntityConstants.CONFIG_RBAC_PROVIDER));
					param.add(list.get(EntityConstants.CONFIG_ACCESS_PROVIDER));
					
					
					RequestObject req = new RequestObject();
					req
							.setAction("han.bifang.gwt.server.action.config.ModifyConfigAction");
					req.setRequest(param);
					service.call(req, cb1);

				}
			});
			if (PrivilegChecker.hasPrivilege(context, null))
				panel.add(b);
			RequestObject req = new RequestObject();
			req
					.setAction("han.bifang.gwt.server.action.config.GetConfigByTypeAction");
			req.setRequest(EntityConstants.CONFIG_TYPE_SECURITY_PROVIDER);
			service.call(req, cb);
			initial = true;
		}
	}

	public void onLoad() {

	}

	private AsyncCallback<ResponseObject> cb = new AsyncCallback<ResponseObject>() {
		public void onSuccess(ResponseObject res) {
			String code = res.getCode();
			if (!code.equals("0")) {
				Window.alert("There was an error: " + res.getMsg());
				return;
			}
			list = new HashMap<String, Config>();
			ArrayList<Config> c = (ArrayList<Config>) res.getResponse();
			for (Config cn : c) {
				list.put(cn.getKey(), cn);
			}
			rbacProvider.setText(list.get(EntityConstants.CONFIG_RBAC_PROVIDER)
					.getValue());
			authProvider.setText(list.get(EntityConstants.CONFIG_ACCESS_PROVIDER)
					.getValue());

		}

		public void onFailure(Throwable caught) {
			Window.alert("There was an error: " + caught.toString());
		}
	};

	private AsyncCallback<ResponseObject> cb1 = new AsyncCallback<ResponseObject>() {
		public void onSuccess(ResponseObject res) {
			String code = res.getCode();
			if (!code.equals("0")) {
				Window.alert("There was an error: " + res.getMsg());
				return;
			}
			Window.alert(cons.modifyOk());

		}

		public void onFailure(Throwable caught) {
			Window.alert("There was an error: " + caught.toString());
		}
	};

	private boolean validate() {
		if (!StringUtils.checkLenght(rbacProvider.getText(), 1, 256)) {
			Window.alert(cons.lengthError(cons.rbacProviderClass(), "1",
					"256"));
			return false;
		}
		
		if (!StringUtils.checkLenght(authProvider.getText(), 1, 256)) {
			Window.alert(cons.lengthError(cons.accessProviderClass(), "1",
					"256"));
			return false;
		}

		return true;

	}

}
